Global Patent Index - EP 4186679 A1

EP 4186679 A1 20230531 - EXTRUSION HEAD FOR CONTINUOUS EXTRUSION OF A MULTILUMEN MEDICAL TUBE, METHOD OF MANUFACTURING A MULTILUMEN TUBE AND A MEDICAL TUBE MANUFACTURED BY THIS METHOD

Title (en)

EXTRUSION HEAD FOR CONTINUOUS EXTRUSION OF A MULTILUMEN MEDICAL TUBE, METHOD OF MANUFACTURING A MULTILUMEN TUBE AND A MEDICAL TUBE MANUFACTURED BY THIS METHOD

Title (de)

EXTRUSIONSKOPF ZUM KONTINUIERLICHEN EXTRUDIEREN EINES MEHRLUMIGEN MEDIZINISCHEN SCHLAUCHS, VERFAHREN ZUR HERSTELLUNG EINES MEHRLUMIGEN SCHLAUCHS UND MIT DIESEM VERFAHREN HERGESTELLTER MEDIZINISCHER SCHLAUCH

Title (fr)

TÊTE D'EXTRUSION POUR L'EXTRUSION CONTINUE D'UN TUBE MÉDICAL À LUMIÈRES MULTIPLES, PROCÉDÉ DE FABRICATION D'UN TUBE À LUMIÈRES MULTIPLES ET TUBE MÉDICAL FABRIQUÉ PAR CE PROCÉDÉ

Publication

EP 4186679 A1 20230531 (EN)

Application

EP 22209070 A 20221123

Priority

PL 43962821 A 20211124

Abstract (en)

The invention relates to an extrusion head for the continuous extrusion of a multilumen medical tube, consisting of a monolithic sleeve and a mandrel embedded therein, characterised in that the mandrel consists of a first part (4a) and a second part (4b), where the first part (4a) of the mandrel is provided with an external thread and with fitter openings arranged circumferentially, in which the needles (5) are fixed, inside the first part (4a) of the mandrel an air supply channel is located, at the end of which there is a threaded hole for screwing in a fastening screw (6) immobilising the needles (5), the second part (4b) of the mandrel is provided with an internal thread matching the external thread of the first part (4a) of the mandrel. The invention also relates to a method for manufacturing a multilumen medical tube, characterised in that the head according to invention is mounted to the extruder, then a plastic is loaded into an extruder, mixed and pushed through the extruder screw while it is heated, then said plastic is extruded through the gap formed between the monolithic sleeve (3) and the mandrel assuming the shape of said gap, then the formed tube is successively pulled through the extruder, guided through the cooling bath with coolant and cut to a pre-set length. The invention also relates to a multilumen disposable medical tube with reduced weight, characterised by a diameter of 1.3 to 12 mm

IPC 8 full level

B29C 48/00 (2019.01); B29C 48/09 (2019.01); B29C 48/11 (2019.01); B29C 48/25 (2019.01); B29C 48/32 (2019.01); B29D 23/00 (2006.01)

CPC (source: EP)

B29C 48/0022 (2019.01); B29C 48/09 (2019.01); B29C 48/11 (2019.01); B29C 48/25686 (2019.01); B29C 48/32 (2019.01); A61M 25/0009 (2013.01); A61M 2025/004 (2013.01); A61M 2039/082 (2013.01); B29D 23/001 (2013.01); B29K 2021/003 (2013.01); B29K 2023/06 (2013.01); B29K 2027/06 (2013.01); B29L 2023/00 (2013.01); B29L 2024/006 (2013.01)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4186679 A1 20230531; PL 439628 A1 20230529

DOCDB simple family (application)

EP 22209070 A 20221123; PL 43962821 A 20211124